Not sure what you are asking. You need to spell out your question in full
sentences.
If you are saying that you have multiple records with the same customer, or
employee, etc. Then you would use multiple related tables.
You might have one table with:
CustomerTable
CustomerNumber
CustomerName
CustomerAddress
CustomerPhone
Etc.
Then another table where you store each sale or transaction...
TransactionTable
CustNum
Date
Amount
Then, you would build a relationship between the tables so that
TransactionTable.CustNum is linked to CustomerTable.CustomerNumber. This is
a classic one-to-many relationship and the whole reason behind relational
database design.
Rick B